. ♪ it's not rocket science. it's just common sense. from td ameritrade. ♪ ♪ >> greg: ho chi min. the show, not albanians had the contestants travel to hanoi, vietnam. they were made to mem mize a communist song, done by a kid in front of a large portrait of the north vietnamese murder dictate or ho chi minh. >> this requires them to watch the performance of the patriotic vietnamese. at the end, they will reveal the words of a celebrated quote. ♪ ♪ >> greg: in the song a contestant said it's like one direction. yes, if it was the massacre of millions of vietnamese. they had to match lyrics to the propaganda posters and then visit b-52 memorial, which was wreckage of shot-down american bomber. >> they make their way to the b-52 memorial. site of the wreckage of a bomber shot down in vietnam war. >> greg: all in all a great tribute to the troops. nicely done, cbs. you can't blame the how did it not cross the producers' mind it could offend those who died there? what is next, jaunt through killing fields? note to producer, premier rouge was not cot metic. maybe the producers are